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Finding the Fourth Proportional to 702,135, 1,053,246.20 and 281,356.20

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Solution

The fourth proportional to 702,135, 1,053,246.20 and 281,356.20 is: 422,051.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,135 : 1,053,246.20 = 281,356.20 : x
  2. Step 2: Convert to fraction form
    702,135/1,053,246.20 = 281,356.20/x
  3. Step 3: Cross multiply
    702,135x = 1,053,246.20 × 281,356.20
  4. Step 4: Simplify right side
    702,135x = 296,337,347,089.66
  5. Step 5: Solve for x
    x = 296,337,347,089.66/702,135
  6. Step 6: Final answer
    x = 422,051.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.